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Publication numberUS1005114 A
Publication typeGrant
Publication dateOct 3, 1911
Filing dateMar 4, 1911
Priority dateMar 4, 1911
Publication numberUS 1005114 A, US 1005114A, US-A-1005114, US1005114 A, US1005114A
InventorsIrving Hamlin
Original AssigneeIrving Hamlin
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Sound-proof door.
US 1005114 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)



APPLICATION FILED MAB-.4, 1911. 1,005,1 14, Patented Oct. 3, 1911.


soUNn-rnoor noon.

Specification of Letters Patent.

Patented Oct. 3, 1911.

2 Application filed March 4, 1911. Serial No. 612,428.

- To all whom it may concern:

iBe it known that I, IRVING HAMLIN, a citizen of the U nited States, residing at Chi cago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Sound-Proof Doors, of which the following is a specification.

My invention relates to doors and similar closing means, and is concerned particularly with means for rendering such closing means soundroof, and also for preventing drafts of air om penetrating therethrough.

I am aware that doors have previously been constructed in which movable means have been used for forming a tight joint between the door and the frame. Such closing means may be effective on a single side of the door, but the difficulty of simultaneously operating closing means for all sides of the door renders such a device inefficient and cumbersome in operation.

In my improved device I have provided means for simultaneousl operating a closing member by which a tight joint is formed between the bottom of the door and the threshold and at the same time tightly forcing the top and side faces of the door against strips of felt or other suitable material mounted. on the door iamb. The mechanism for accomplishing this purpose is operated entirely by turning the handle of the door, thus giving the advantage of simplicity of operation while at the same time the door presents its usual appearance and is not marred by the presence of disfiguring mechanism. These and other advantages of my invention will be more apparent by reference to the accompanying drawings, which show a preferred embodiment of my improvements, and in which-- Figure 1 is a side elevation of a door and its frame, showing my closing mechanism in position; Fig. 2 is a vertical transverse section on the line 2-2 of Fig. 1; Fig. 3 is an. enlarged fragmentary vertical transverse section through the metallic box contained in the door frame and in connection with which the door-catch operates; and Fig. 4 is an enlarged fragmentary transverse section through the lower portion of the door, showing the movable closing member in position.

The door 10 of my invention may be of any well-known type, but in order to prevent more efiiciently the cnetration of sound, I prefer to make it 1n two parallel portions 11, 11, between which felt or other similar material 12 may be mounted. The lower portion of the door has the recess 13, in which the closing member 14 is adapted to reciprocate in a vertical plane. The bottom of this closing member 14 has the recess 15, in which felt or other similar material 16 is fastened by means of the screw. 17. As clearly shown in Figs. 2 and 4, the felt 16 projects in folds below the lower edge of the closing member 14, and when the latter is depressed the felt 16 is adapted to form a tight closure with the threshold 18.

Near the center of the closingmember 14 IS the transverse rod 19, to which is connected the link 20. This link, in turn, is suitably connected to the lever 21, which is pivoted to the bracket 22 at the point 23. Extending from the opposite end of the lever 21' to the arm 24 of the cam 25 is the link 26.

The cam 25 is rigidly mounted on the spindle 27, which is provided with a suitable handle 28 preferably in the form of a lever, so that a strong pressure may be exerted with little effort. The cam 25 has an extension 29 which forms the door-catch.

.Mounted within the door-frame 30 is the metallic box 31, to the bottom of which is riveted, or otherwise suitably attached, the metal strip 32 having the obliquely-disposed portion 33. Between one side of the box 31 and the oblique portion 33 of the strip 32 is placed the wedge 34. This wedge may be moved in a vertical plane by means of the screw 35, the upper end of which is mounted in the top of the box 31, this screw being turned by engagement of its rectangular portion 36 with a wrench or other similar tool. The frontof the box 31 is provided with a plate 37, which has suitable openings for the admission of the portion "29 01 the cam 25, and also the wrench, by

means of which the screw 35 is rotated.

As best shown in Fig. 2, the door-jamb 38 on the sides and top of the door-frame 30 are provided with strips of felt 39, with which the face of the door is adapted to form engagement.

Having thus described the construction of the various arts used in .my invention the operation of the same may now be readily understood.

hen it is desired to open the door, the handle 28, shown in Fig. 1,is moved in a clockwise direction, thereby elevating the portion 24 of the cam 25 and correspondingly depressing the portion "29 until the lat t ter is removed from the plane of the front plate 37. The portion it of the vain ii noing raised, the rinsing member l1" issnnr .larly raised through the instrnnnntatitv oi the link 26. the lever :21 and the link 320. The felt 16 being thus removed from the threshold 18, the door may readily be opened. After the door is closed, on the other hand, the handle -35 is moved in a notanteneloelcwise dirt-(t ion, thereby t'ilpl i S- inn the portion iii of the cam 27 and non responding ly foreing the movable elobmg' member let downwardly, thus bringingthe felt 16 into close eontarl with the threshold lb. As the portion 2%} of the cam 2;) is raised it comes in Contact. with th obliquelydisposed nortion 33 of the strip 39, and the fare of the door in thus forced imrardly atlainst the felt strips 53!! on the tlilUt'-jiltlll ii. In this way a tight contact is formed ln=i\\tt1i the door and the doord'rame on ail sides, and the door is eti'ei-tuallv renden-d soundand draft-proof.

As the felt 16 on the bottom of the movable member L1 is gradually flattened by use, it; will be apparent that the portion 2i of the "am 25 must be unwed farther in a downward direction in order to form a tight elosure on the bottom of the door. At the same time the portion 29 of the cam 25 will he moved further upwardly, and in order to provide for this additional movement the weda'e 34 is raised the desired distance to onah' the oblique portion of the strip :ii? to occupy the proper position,

It will be apparent to those skilled in the art that many changes could be made in the detailed eonstriu-tion ot the various parts which I have described without departing: from the spirit or scope of my invention.

'hat I claim is: 1

l. In vomhination with a frame ilit'ltlfillig an aperture, a shutter for said aperture, mm aide jointelosing means on said shutter, and manmon means for oimultanoously tori ing said shutter into rout-art with said frame and urinating said movable closing means, substantially as ile1-'vliln.("l.

in vomhination with a doord'rame, a door within said frame, movable joint-elos inn means harried by said door, and (ommon means for inniitaneously fort'ing said door into ('Ulililti with said frame and al'tuating said movable rinsing means, subsiantiallj as des ribed.

23. In combination with a door-franle hav ing a jantb thereon, a door within said frame and adaptedto engage said jamb, movable closing means between said door and said frame, said closing means being carried by said door, and common means; for simultaneously forcing said door againet said jamb and actuating said movable closing means, substantially as described.

l-. In (aanbinatioa with a dnort'rznno iar ing' a jamb thereon, a door within said t'rauie and adapted to an" in mild jani movable joint-dosing means carried on the lmttoltl of said door and adapted to engage the thre hold of said frame, and i-ommon llltttlh t'or sinndtaneousiy forcing said door against said jantb and moving said ulo ing lllttllh into contaet with said threshold, substantiall as deseribed.

5. In combination with a doord'raim having a. janib thereon, a door within said frame, said. door having a recess in its bottom, movable means for closing the joint between the bottom of the door and the threshold of the frame, and common means for simultaneously actuating said closing means and forcing the door into eontaut with said jamh, substantially as described.

it. In combination with a door-frame ha ving a iamb thereon, a door within said frame, a rotatable spindle in said. door, means for (losing the joint between the bottom of said door and the threshold of said frame, a Cam. mounted on leaid spindle, means (onneuiing said ram with said mm able closing means, and means for forcing said door into eontaet with said jalub when said (Sam is rotated, substantially as described.

7. In combination with a door-frame having a jamb thereon, an obliquely-disposed abutment member mounted in said frame, a door within said frame and adapted to engage said jamb, movable means for closing the joint between the bottom of said door and the threshold of the frame. and common means for simultaneously actuatin; said movable closing means and formin; engagement with said abutment member, whereby the door is forced against said jamb and the joint. between the bottom of the door and the-threshold is closed, sub stantially as described.

R. in combination with a door-framehaving a jamb there'on, an obliquely-disposed abutment member mounted in said frame,

means for moving the oblique engaging surfa e of said abutment member, a door within said frame, a movable closing member harried on the bottom of said door for closing the joint between said door and the threshold of said frame, a spindle in. said door, a cam mounted on said spindle, and adapted to engage the obliquelyalisposed surfare of said abutment member. and meansronneeting said ('am with said cloning member whereby rotation of said spindle moves said closing member into eontaet with said threshold and FOIPQQ the door into tight engagement with said 'jamh, substantially as described.

9. in combination with a frame iuctosing an aperture, a shutter for said aperture, movable joint-elosing means on said shutter, means for f rcing said shutter into vontact with said frame, and means connecting said forcing means with said joint-closing means, substantially as described.

10. In combination with a door frame having a jamb thereon, a door Within said frame, means for closing the joint between the bottom of said door and the threshold of said frame, means for forcing said door into contact with said jamb, and means connecting said forcing means with said 10 joinbclosing means, thereby rendering their operation simultaneous, substantially as described.


Witnesses: Emv. B. DAVIDSON, AMY AMIDON.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2765504 *Feb 6, 1951Oct 9, 1956Laumann JosephDraught excluders for doorways
US3199155 *Nov 12, 1963Aug 10, 1965Brunswick CorpFloor seal
US7124538 *Jan 18, 2005Oct 24, 2006Kline C WalterAssembly providing a water restrictive barrier and an unobstructed passageway for a doorway
U.S. Classification49/319
Cooperative ClassificationE06B7/18